Zabo 1960 Empidonax hammondi June 7 Dean's Meadow, 6400 ft., Lassen Co., Calif. - A bird, recognized to be this form by its song, having recently heard N. Johnson's recording of it, sitting at the very top of a 50 ft. White Fir (?) in this mixed pine-fir forest. It moved so yds. to top of another tree then flew away. I am at meadow, perhaps 1000 ft. higher. June 8 Lmi., N.2 1/2 mi. E Mahogany Psh, 5080 ft., Lassen Co., Calif. Shot one bird, which was sitting quietly, from the low branches of a yellow pine. Then heard another a couple trees away-it sang a couple times. It flew ahead of me about 20-25 yds., then flew back over my head near where I got the first. It was originally in low branches, but in the last tree worked up in the center of the tree to near the top before I got it. Its song had been 4 notes, in 2 doublets. A moment later a third bird flew into area. It sang